Valve for pneumatic tires.



B. E. TAYLOR. VALVE FOR PNEUMATIC TIRES.

APPLICATION FILED MAR. n.

Patented Mar. 28,1916.

- lnesses :BAYARD E. TAYLR, OF DAK PARK, IELLNOIS.

VALVE FOR PNEUMAT TIRES.

Application led March 11, 1912, Serial No. 682,851.

To all whom it' may concern.'

Be it lrnown that I, BAYARD E. TAYLOR, a citizen 'of the United States, and resident of Oak Park, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Valves for Pneumatic Tires, of which the following is a specification and which are illustrated in the accompanyingl drawings, forming a part thereo.

The invention relates to inlet valves for pneumatic tires such as are used on automobiles and bicycles; its object being to provide a Warning signal to call attention to leaks in the tire which'are of sufficient importance to cause its deflation.

`The invention consists in its broader aspects in means for giving a signal of the collapse of a tire and actuated by the tire in its collapse. y

More specifically, it consists in an induction valve for the tire so constructed that as the tire collapses the valve is ruptured to permit the escaperot' air in such volume Aas to` produce. a whistling sound suilicient to attract the attention of the occupant of the vehicle.

It is well known that pneumatic tires are Vin danger of serious structural injury when used in a deflated condition. This trouble is so serious that good practice demands the immediate removal or repair of a tire which `will not hold, the air, and yet it frequently n happens thatl the vehicle will be driven for a considerable distance after delation'before its condition is discovered. ,i

The present invention provides /for a Asignal which will advise the vehicle occupant that the tire is becoming flattened before the air has escaped to such an extent as, to pro- Hdnceinjuryf to the fabric.

The invention is illustrated in the accompanying drawings, in which- Figure l is asectional view, transversely through the tire, the rim of the Wheel, and longitudinally through the valve casing; Fig. 2 is a similar view showing the parts in the position assumed upon deflation; Fig.

3 is a detail of the valve; and Fig. 4 is a detail, partly broken away, of a puncturable disk mounted in the outer end of the cap of the valve casing.

The valve may be used in connection with any form of pneumatic tire, there being shown in the drawings atire casing 10 of the ordinary clencher variety, and at 1l the inner tube used in connection with such Specification of Letters Patent.

vextending nipple 'mounted within thel inner end of the .li-*atented Mar. 22-, Renewed :rune 2e, 1915, serial No. 36,552.

'a casing. The wheel rim is shown at 12,

having the usual felly 13 (generally of Wood) with an aperture within which is fitted a bushing 111 for receiving the valve casing.

The valve casing 15 is of the usual tubular form, being flanged at its inner end, as shown at 1t?, for engagement with the tube 11, a clamping nut 17 in threaded engagement with the casing 15 cooperating with the flange 1G to secure the casing to the tube. There is also present 18, running upon the valve casing for clamping the latter to the rim of the wheel. The casing 15 is provided with a centrally apertured bridge 19 located a short distance from its outer end.

A. valve seat 20, annular in torni, enters the outer end of the casing 15, which is counterbored and threaded to receive it, an annular gasket 21 being,` interposed between a shoulder 22 on the seat 20 and the bottom of the counterbore. The valveseat is secured within the casinoJ nut 23 entering the counterbore and bearing upon the outer face of the shoulder 22. The valve seat is provided with an outwardly Q4, adapted to be engaged by the nipple ol an air pump.

The valve proper comprisesA a spindle 25,

,preferably having upon its shaft an enlarge ment 26 which serves as an anchorage and sulicient space being' provided between the` valve seatfand the bridge 19 to permit the valve to be'unseated by air delivered under pressure 'from the pump, the bridge, however, .prevcntiup, the inward movement of the valve.

As'thns far described the device presents no novel features, the valve and its seat being" substantially in accordance Lwith coinmon practice. The shaft offthe valve is, however, extended inwardly, 'asf 'shown at 28, for engagement by a plunger'QQ slidingly casing 15 and normally extending into the tube 11, this plunger being held Within the casing 15 by any suitable means, such as a pin 30, set across the'inner end of the casing and passthe usual'binding nut i ill ing through a longitudinal slot 31 in the plunger. "lhe plunger' is held in its extended position by means of a helical spring 32 reacting between its inner end and the bridge 19. l

The valve spindle is provided with an enlarged head 33 at its outer end, which preferably terminates in a piercing point 34.

This head is housed within a counterbore in the valve seat 20. The enlargement or boss 26 is of less diameter than the duct 35, and when freed from the valve 27 may pass therethrough.

Ihe cap 36 threaded upon the casing 15 has a frangible head. As shown this is secured by forming. the cap with a central aperture, and seating within it7 so as to close the aperture, a thin metal disk 38, preferably concave, to the inner face of which there is applied a gasket 39, preferably of rubber, which lits upon the outer end of the valve seat 20.

The valve is used in thi` ordinary way. For inflating the tire the cap 36 is'removed. The pump nipple is tted to the nipple 24 of the valve seat 20. The pump being operatedfthe valve is unseated to admit the air which passes through the aperture in the bridge 19 and through the plunger 29, the inner endo which is suitably apertured for this purpose, as shown at 40.

The tire having been inflated, the pump is detached, the valve 27 being held to its seat by internal pressure; the cap 36 is tted upon the casing and the tire is in condition for use.

While the valve iscapable of withstanding the air pressure it will` be destroyed when called upon to sustain the weight of the vehicle. Should the tire become lattened by partial' deflation, its outer wall.

will force the plunger I29 outwardly, and

' with it the valve shaft 25, rupturing the valve 27, the gasket 39, and cap 36 (as shown lin Fig. 2), permitting the rapid escape of the air, which will produce a Whistling sound sufficiently loud to be certainly heard by the occupant of the vehicle, and thus advising him that the tire is deective. The valve and sealing ca having been destroyed, new ones are .su stituted While the invention is shown'as applied to the induction valve of a tire, whichconaf.- struction is preferred for simplicity'fand cheapness, any device-consistingyof'a' vent opena-ble by the collapse of the tire so as to produce a whistling sound by the escape of air may be used. Neitherldo l desire to be limitedl to the particular form of valve mechanism herein described when the open- 6,0 able vent is used in connection with the'induction valve.

I claim as my invention 1. In a valve for pneumatic tires, in combination, a casing, an outwardly seat. 65 ing valve within the casing, `a plunger reciprocating with-in the casing and normally projecting beyond the inner end thereof, and destructively engaging the valve Whenforced outward. i

2. In a valve for pneumatic tires, in combination, a casing, a centrally apertured valve seat within the casing, a destructible valve engaging the seat, a plunger recipro eating within the casing and adapted to V bear outwardly upon the valve. v

3. .In a valve for pneumatic tires, in combination,.a tubular casing, a centrally :ipertured valve-seat within the casilufgrav destructible valve bearing outwardlylagainst 80 the-seat and having a spindle extending through the seat aperture, a puncturable cap at the outer end of the casing, and a plunger reciprocating within the inner end' of the casing and engageable with the valve,..85" spindle. i n A 4. In a valve for pneumatic tires` in combination, a tubular casing, a vaive seat, within the casing, a destlructible valve bearh ing outwardly against the seat, auspindliio carrying the valve and projecting outwardly.'

`and inwardly therefrom, a lpuncturable at the outer end of the casing, and a vplunger-'j reciprocating within the inner end of, the p casing and engagea-ble with the inner end 9.5 of the spindle.

5. In a valve for pneumatic tires, in combination, a casing, a puncturable external closure for the casing, and a plunger rcciprocating within the inner end of the casing and destructibly en-gageable with the puncturable closure. I Y y 6. In a valve for pneumatic tires, in combination, al casing, a puncturable external closure for the casing, and a plunger actu- 1015- ated by the pressure of a collapsingtire t0 which. the valve is applied for rupturing 

